CN115400444A - Rectifying tower control method, storage medium and electronic equipment - Google Patents
Rectifying tower control method, storage medium and electronic equipment Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention provides a rectifying tower control method, a storage medium and electronic equipment, wherein the method comprises the steps of acquiring the current tower kettle liquid level and the current tower kettle temperature of a rectifying tower in real time; and controlling the running state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information. By implementing the invention, the temperature and the liquid level of the tower kettle can be accurately controlled, the rectifying tower can be automatically controlled, the working efficiency and the safety are improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of chemical engineering, in particular to a rectifying tower control method, a storage medium and electronic equipment.
Background
The chemical industry is an important component of national economy and has important influence on the economic development and the life of people. In the chemical process industry, reactions and separations are the two most central parts of the chemical industry. The reaction is used for obtaining chemical products, and the separation is mainly used for refining the products, removing impurities, recovering raw materials and the like. The rectifying tower is used as a mature separation unit in the chemical process, and has wide application in the process flow. Most products of the rectifying tower are final products of the process flow or raw materials of the next procedure, so the control condition of the rectifying tower directly influences the operation condition of the whole process, and the stable operation of the rectifying tower is also very important for maintaining the stable quality of the products.
Due to scale limitation, the prior design of intermittent extraction is adopted for part of rectifying towers, firstly, after heavy components are accumulated in a tower kettle, steam pressure is increased for concentration, and after the concentration is finished, extraction is carried out to package products.
However, in the process of implementing the invention, the inventor finds that the adjustment of the whole process of the existing intermittent extraction rectifying tower depends on the experience of operators to carry out manual adjustment, and the problems of overhigh steam amount or overhigh liquid level and the like in the process can be inevitably caused, so that the problems of overhigh temperature in the rectifying tower, cavitation of a tower kettle pump, pipeline blockage caused by evaporation of heavy components, overhigh liquid level and material overflow and the like are easily caused, and the safety production is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rectifying tower control method, a storage medium and electronic equipment, so that the temperature and the liquid level of a tower kettle are accurately controlled, the rectifying tower is automatically controlled, the working efficiency and the safety are improved, and the cost is reduced.
The technical scheme of the invention provides a rectifying tower control method, which comprises the following steps:
acquiring the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time;
controlling the operation state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information, wherein the target rectifying tower information comprises a first target tower kettle liquid level, a first target tower kettle temperature and a second target tower kettle temperature, the first target tower kettle temperature is lower than the second target tower kettle temperature, and the operation state comprises a concentration state, a liquid collecting state and a collecting state.
Further, the controlling the operation state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information includes:
if the current tower kettle liquid level is less than the first target tower kettle liquid level, controlling the rectifying tower to be in the liquid collecting state;
if the current tower kettle liquid level is larger than the first target tower kettle liquid level, controlling the rectifying tower to be in the concentration state;
and if the current tower kettle liquid level is equal to the first target tower kettle liquid level and the current tower kettle temperature is equal to the second target tower kettle temperature, controlling the rectifying tower to be in the extraction state.
Further, if the current tower bottom liquid level is less than the first target tower bottom liquid level, controlling the rectifying tower to be in the liquid collecting state, including:
if the current tower kettle liquid level is smaller than the first target tower kettle liquid level, acquiring a first current steam pressure of the rectifying tower, a preset first steam pressure threshold value and a first current valve opening degree of a steam regulating valve;
and controlling a first target steam pressure of the rectifying tower and a first target valve opening of the steam regulating valve according to the current tower kettle temperature, the second target tower kettle temperature, the first current steam pressure, the first steam pressure threshold value and the first current valve opening until the current tower kettle liquid level is equal to the first target tower kettle liquid level.
Further, the controlling a first target steam pressure of the rectifying tower and a first target valve opening of the steam adjusting valve according to the current tower kettle temperature, the second target tower kettle temperature, the first current steam pressure, the first steam pressure threshold value, and the first current valve opening includes:
calculating the first target steam pressure according to the first steam pressure threshold value and the difference value between the current tower kettle temperature and the second target tower kettle temperature;
and calculating the first target valve opening according to the first current valve opening and the difference value between the first target steam pressure and the first current steam pressure.
Further, if the current tower kettle liquid level is greater than the first target tower kettle liquid level, controlling the rectifying tower to be in the concentrated state, including:
if the current tower kettle liquid level is larger than the first target tower kettle liquid level, acquiring a second current steam pressure of the rectifying tower, a preset second steam pressure threshold value and a second current valve opening degree of a steam regulating valve;
and controlling a second target steam pressure of the rectifying tower and a second target valve opening of the steam regulating valve according to the current tower liquid level, the first target tower kettle liquid level, the second current steam pressure, the second steam pressure threshold value and the second current valve opening until the current tower kettle temperature is equal to the first target tower kettle temperature.
Further, the controlling a second target steam pressure of the rectifying tower and a second target valve opening of the steam regulating valve according to the current tower liquid level, the first target tower kettle liquid level, the second current steam pressure, the second steam pressure threshold value and the second current valve opening includes:
calculating the second target steam pressure according to the second steam pressure threshold value and the difference value between the current tower kettle liquid level and the first target tower kettle liquid level;
and calculating the second target valve opening according to the second current valve opening and the difference value between the second target steam pressure and the second current steam pressure.
Further, if the current tower kettle liquid level is equal to the first target tower kettle liquid level, and the current tower kettle temperature is equal to the second target tower kettle temperature, controlling the rectifying tower to be in the extraction state includes:
and if the current tower kettle temperature is equal to the first target tower kettle liquid level and the current tower kettle temperature is equal to the second target tower kettle temperature, stopping controlling the steam pressure and the steam regulating valve of the rectifying tower, and opening the extraction valve and timing.
Further, target rectifying column information still includes second target tower cauldron liquid level, second target tower cauldron liquid level is less than first target tower cauldron liquid level, stop control the steam control valve and the steam pressure of rectifying column open the extraction valve and time, later still include:
and if the current tower kettle liquid level is less than the second target tower kettle liquid level or the timing reaches a preset time threshold, closing the extraction valve and controlling the rectifying tower to be in the liquid collecting state or the concentrating state.
The technical solution of the present invention also provides a storage medium, which stores computer instructions for executing all the steps of the rectification column control method as described above when a computer executes the computer instructions.
The technical solution of the present invention also provides an electronic device, including:
at least one processor; and (c) a second step of,
a memory communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a rectifier control method as previously described.
After adopting above-mentioned technical scheme, have following beneficial effect: the current tower cauldron liquid level and the current tower cauldron temperature through acquireing the rectifying column in real time to according to current tower cauldron liquid level, current tower cauldron temperature and the running state of predetermined target rectifying column information control rectifying column, thereby accurate control tower cauldron temperature and liquid level realize automatic control rectifying column, improve work efficiency, avoid manual operation error to lead to the incident, improve the security, reduce cost.
Drawings
The present disclosure will become more readily understood by reference to the following drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
FIG. 1 is a schematic diagram of the structure of a rectifying column control system of the present invention;
fig. 2 is a flowchart illustrating a method for controlling a rectifying tower according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for controlling a rectifying tower according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an electronic device for controlling a rectifying tower according to a fifth embodiment of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that, according to the technical solution of the present invention, a person skilled in the art can substitute various structural modes and implementation modes with each other without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The directional terms upper, lower, left, right, front, rear, front, back, top, bottom and the like that are or may be mentioned in this specification are defined relative to the configurations shown in the drawings, and are relative concepts that may be changed accordingly depending on the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
Example one
As shown in fig. 1, a rectifying tower control system applied to the rectifying tower control method of the present invention includes a raw material tank T1001, a rectifying tower C1001, a product storage tank T1002, a reboiler E1001, a condenser E1002, a tower bottom level gauge 11, a tower bottom temperature gauge 12, a steam regulating valve 13, a take-off valve 14, and a controller (not shown), an input end of the rectifying tower C1001 is respectively communicated with the raw material tank T1001, the reboiler E1001, and the condenser E1002, an output end of the rectifying tower C1001 is communicated with the product storage tank T1002 through the take-off valve 14, an input end of the controller is respectively communicated with the tower bottom level gauge 11 and the tower bottom temperature gauge 12, and an output end of the controller is respectively communicated with the steam regulating valve 13 and the take-off valve 14.
The tower kettle liquid level meter 11 is used for acquiring the current tower kettle liquid level of the rectifying tower in real time and transmitting the current tower kettle liquid level to the controller.
The tower kettle thermometer 12 is used for acquiring the current tower kettle temperature of the rectifying tower in real time and transmitting the current tower kettle temperature to the controller.
The steam regulating valve 13 is used for controlling the liquid level and the temperature of the rectifying tower by regulating the steam pressure.
The extraction valve 14 is used for extracting the product in the rectifying tower.
The controller is used for receiving the current tower kettle liquid level transmitted by the tower kettle liquid level meter 11 and/or the current tower kettle temperature transmitted by the tower kettle thermometer 12, and controlling the opening or closing of the steam regulating valve 13 and the extraction valve 14 according to the current tower kettle liquid level or the current tower kettle temperature. It should be noted that the Controller of the present invention may be an independent chip with processing capability, or may be a Programmable Logic Controller (PLC), and preferably, the Controller of the present invention is a PLC.
Example two
As shown in fig. 2, fig. 2 is a working flow of a rectifying tower control method according to an embodiment of the present invention, including:
step S201: acquiring the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time;
step S202: and controlling the running state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information.
Specifically, when the rectifying tower is started to operate, the controller executes step S201 to obtain the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time, and executes step S202 to control the operating state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature, and preset target rectifying tower information. The target rectifying tower information comprises a first target tower kettle liquid level, a first target tower kettle temperature and a second target tower kettle temperature, the first target tower kettle temperature is lower than the second target tower kettle temperature, and the operation state comprises a concentration state, a liquid collecting state and a collecting state.
By implementing the method, the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower are obtained in real time, and the running state of the rectifying tower is controlled according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information, so that the tower kettle temperature and the liquid level are accurately controlled, the rectifying tower is automatically controlled, the working efficiency is improved, safety accidents caused by manual operation errors are avoided, the safety is improved, and the cost is reduced.
In one embodiment, to further improve the accuracy, step S202 includes:
if the current tower kettle liquid level is less than the first target tower kettle liquid level, controlling the rectifying tower to be in a liquid collecting state;
if the liquid level of the current tower kettle is larger than the liquid level of the first target tower kettle, controlling the rectifying tower to be in a concentrated state;
and if the current tower kettle liquid level is equal to the first target tower kettle liquid level and the current tower kettle temperature is equal to the second target tower kettle temperature, controlling the rectifying tower to be in the extraction state.
Example three:
as shown in fig. 3, fig. 3 is a flowchart of a method for controlling a rectifying tower according to a third embodiment of the present invention, including:
step S301: acquiring the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time;
step S302: judging whether the current tower kettle liquid level is less than a first target tower kettle liquid level;
step S303: acquiring a first current steam pressure of the rectifying tower, a preset first steam pressure threshold value and a first current valve opening degree of a steam regulating valve;
step S304: controlling a first target steam pressure of the rectifying tower and a first target valve opening of a steam regulating valve according to the current tower kettle temperature, a second target tower kettle temperature, a first current steam pressure, a first steam pressure threshold value and a first current valve opening;
step S305: judging whether the current tower kettle liquid level is equal to a first target tower kettle liquid level or not;
step S306: judging whether the current tower kettle liquid level is larger than a first target tower kettle liquid level or not;
step S307: acquiring a second current steam pressure of the rectifying tower, a preset second steam pressure threshold value and a second current valve opening degree of the steam regulating valve;
step S308: controlling a second target steam pressure of the rectifying tower and a second target valve opening of the steam regulating valve according to the current tower liquid level, the first target tower kettle liquid level, the second current steam pressure, a second steam pressure threshold value and a second current valve opening;
step S309: judging whether the current tower kettle temperature is equal to a first target tower kettle temperature or not;
step S310: judging whether the current tower kettle temperature is equal to the first target tower kettle liquid level or not and whether the current tower kettle temperature is equal to the second target tower kettle temperature or not;
step S311: stopping controlling the steam pressure of the rectifying tower and the steam regulating valve, and opening the extraction valve and timing;
step S312: judging whether the current tower kettle liquid level is smaller than a second target tower kettle liquid level or whether the timing reaches a preset time threshold value;
step S313: closing the extraction valve and controlling the rectification tower to be in a liquid collecting state or a concentrated state.
Specifically, when the rectifying tower is started to operate, the controller executes step S301 to obtain the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time, and executes step S302 to judge whether the current tower kettle liquid level is less than a first target tower kettle liquid level, if so, executes step S303 to step S305, adjusts first target steam pressure and first target valve opening degree through a steam adjusting valve to realize a temperature control loop until the current tower kettle liquid level is equal to the first target tower kettle liquid level, and otherwise, executes step S306;
in step S305, judging whether the current tower kettle liquid level is equal to a first target tower kettle liquid level, if so, executing step S306, switching the control temperature loop to a control liquid level loop, otherwise, continuing to execute step S303-step S305.
In step S306, it is determined whether the current tower kettle liquid level is greater than the first target tower kettle liquid level, if yes, step S307 to step S309 are performed, the second target steam pressure and the second target valve opening degree are adjusted by the steam adjusting valve, so as to control the liquid level loop until the current tower kettle temperature is equal to the first target tower kettle temperature, otherwise, step S310 is performed.
In step S309, it is determined whether the current tower bottom temperature is equal to the first target tower bottom temperature, if yes, step S310 is executed, otherwise, step S306-step S308 are continuously executed.
In step S310, it is determined whether the current temperature of the column bottom is equal to the first target liquid level of the column bottom and whether the current temperature of the column bottom is equal to the second target temperature of the column bottom, if yes, step S311 to step S312 are performed, the operation state of the rectifying column is controlled to be the extraction state, and the product in the rectifying column is extracted, otherwise, step S302 is performed.
In step S312, it is determined whether the current tower bottom liquid level is less than the second target tower bottom liquid level, or whether the timing time reaches a preset time threshold, if yes, step S313 is executed, otherwise, step S311 is continuously executed.
In step S313, or the current tower bottom liquid level is less than the second target tower bottom liquid level, or the timing reaches a preset time threshold, the extraction valve is closed, and the steps S302 to S305 or S306 to S309 are executed in a circulating manner, so as to automatically put into service the control temperature loop or the control liquid level loop.
The sequence of step S302 to step S305, step S306 to step S309, and step S310 to step S313 is only for convenience of description, and does not limit the claims, and a person skilled in the art should understand that the sequence of step S302 to step S305, step S306 to step S309, and step S310 to step S313 can be interchanged or synchronized without affecting the actual effect.
By implementing the method, the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower are obtained in real time, and the running state of the rectifying tower is controlled according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information, so that the tower kettle temperature and the liquid level are accurately controlled, the rectifying tower is automatically controlled, the working efficiency is improved, safety accidents caused by manual operation errors are avoided, the safety is improved, and the cost is reduced.
In one embodiment, to further improve the accuracy, step S304 includes:
calculating a first target steam pressure according to the first steam pressure threshold value and the difference value between the current tower kettle temperature and the second target tower kettle temperature;
and calculating a first target valve opening according to the first current valve opening and the difference value between the first target steam pressure and the first current steam pressure.
Specifically, the first target steam pressure is calculated using the following formula:
wherein, the PSP 1 Is a first target steam pressure; PSP 0 Is a first steam pressure threshold; t is a unit of e The difference value between the current tower kettle temperature and the second target tower kettle temperature is obtained; k p 、T d And T s To adjust the parameters, K p 、T d And T s Can be set according to the requirements of users.
The first target valve opening is calculated using the following equation:
wherein, VO 1 A first target valve opening; VO (vacuum vapor volume) 0 Is a first current valve opening; p e1 Is the difference between the first target steam pressure and the first current steam pressure.
In one embodiment, the parameter K can be adjusted p 、T d And T s Can be obtained by adopting the following method:
switching the control temperature loop or the control liquid level loop to a manual position to obtain a third current valve opening and a third current steam pressure of the steam regulating valve;
adjusting the third current valve opening to a third target valve opening, and storing first adjusting time corresponding to the moment;
acquiring a fourth current steam pressure corresponding to the stabilized steam regulating valve and second regulating time when the steam regulating valve is changed from the third current steam pressure to the fourth current steam pressure;
acquiring third adjusting time required by a third target steam pressure reached by the steam adjusting valve after the steam adjusting valve is changed by the transfer function;
and calculating adjustable parameters according to the third current valve opening, the third current steam pressure, the third target valve opening, the fourth current steam pressure, the first adjusting time, the second adjusting time and the third adjusting time.
In particular, the parameter K can be adjusted p 、T d And T s Calculated using the following formula:
wherein, MV 1 Is the third current valve opening; PV (photovoltaic) 1 Is the third current steam pressure; MV (Medium Voltage) data base 2 A third target valve opening; PV 2 Is the fourth current steam pressure; t is t 1 Is a first adjustment time; t is t 2 A second adjustment time; t is t 3 Is the third adjustmentTime.
In one embodiment, the third target steam pressure is calculated using the following equation:
PV 3 ＝PV 1 +0.632*(PV 2 -V 1 )
wherein PV 3 Is the third target steam pressure.
In one embodiment, to further improve the accuracy, step S308 includes:
calculating a second target steam pressure according to the second steam pressure threshold value and the difference value between the current tower kettle liquid level and the first target tower kettle liquid level;
and calculating a second target valve opening according to the second current valve opening and the difference value between the second target steam pressure and the second current steam pressure.
Specifically, the second target steam pressure is calculated using the following formula:
wherein the PSP 2 A second target steam pressure; PSP' 0 A second steam pressure threshold; l is e And the difference value of the current tower kettle liquid level and the first target tower kettle liquid level is obtained.
The second target valve opening is calculated using the following equation:
wherein, VO 2 A second target valve opening; VO' 0 Is the second current valve opening; p e2 Is the difference between the second target steam pressure and the second current steam pressure.
Example four
A fourth embodiment of the present invention provides a storage medium, which is configured to store computer instructions, and when the computer instructions are executed by a computer, is configured to execute all steps of the rectifying tower control method in any one of the method embodiments described above.
EXAMPLE five
As shown in fig. 4, a schematic diagram of a hardware structure of an electronic device for controlling a rectifying tower according to a fifth embodiment of the present invention includes:
at least one processor 401; and the number of the first and second groups,
a memory 402 communicatively coupled to the at least one processor 401; wherein, the first and the second end of the pipe are connected with each other,
the memory 402 stores instructions executable by the at least one processor 401 to be executed by the at least one processor 401 to enable the at least one processor 401 to perform the rectifier control method as previously described.
In fig. 4, one processor 401 is taken as an example.
The electronic device is preferably a controller of the present invention.
The electronic device may further include: an input device 403 and an output device 404.
The processor 401, the memory 402, the input device 403, and the output device 404 may be connected by a bus or other means, and are illustrated as being connected by a bus.
The memory 402, which is a non-volatile computer-readable storage medium, can be used to obtain non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the rectifying tower control method in the embodiments of the present application, for example, the method flows shown in fig. 2 to fig. 3. The processor 401 executes various functional applications and data processing by running the nonvolatile software programs, instructions, and modules acquired in the memory 402, so as to implement the rectifying tower control method in the above-described embodiment.
The memory 402 may include an acquisition program area and an acquisition data area, wherein the acquisition program area may acquire an operating system, an application program required for at least one function; the data acquisition section may acquire data created according to the use of the rectifying tower control method, and the like. Further, the memory 402 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 402 may optionally include memory located remotely from processor 401, and these remote memories may be connected via a network to a device that performs the rectification column control method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Input device 403 may receive input from a user and generate signal inputs related to user settings and functional control of the rectifier control method. The output device 404 may include a display device such as a display screen.
The one or more modules, when executed by the one or more processors 401, perform the rectifier control method of any of the method embodiments described above when retrieved in the memory 402.
The product can execute the method provided by the embodiment of the application, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the methods provided in the embodiments of the present application.
The electronic device of embodiments of the present invention exists in a variety of forms, including but not limited to:
(1) An Electronic Control Unit (ECU) is also called a "traveling computer" or a "vehicle-mounted computer". The digital signal processor mainly comprises a microprocessor (CPU), a memory (ROM and RAM), an input/output interface (I/O), an analog-to-digital converter (A/D), a shaping circuit, a driving circuit and other large-scale integrated circuits.
(2) Mobile communication devices, which are characterized by mobile communication functions and are primarily targeted at providing voice and data communications. Such terminals include smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.
(3) The ultra-mobile personal computer equipment belongs to the category of personal computers, has the functions of calculation and processing, and generally has the mobile internet access characteristic. Such terminals include PDA, MID, and UMPC devices, among others.
(4) Portable entertainment devices such devices may display and play multimedia content. Such devices include audio and video players (e.g., ipods), handheld game consoles, electronic books, as well as smart toys and portable car navigation devices.
(5) The server is similar to a general computer architecture, but has higher requirements on processing capacity, stability, reliability, safety, expandability, manageability and the like because of the need of providing high-reliability service.
(6) And other electronic devices with data interaction functions.
Furthermore, the logic instructions in the memory 402 may be implemented in software functional units and may be acquired from a computer readable storage medium when the logic instructions are sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is obtained from a storage medium and includes several instructions for enabling a mobile terminal (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of acquiring program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be obtained from a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A rectifying column control method is characterized by comprising the following steps:
acquiring the current tower kettle liquid level and the current tower kettle temperature of the rectifying tower in real time;
controlling the operation state of the rectifying tower according to the current tower kettle liquid level, the current tower kettle temperature and preset target rectifying tower information, wherein the target rectifying tower information comprises a first target tower kettle liquid level, a first target tower kettle temperature and a second target tower kettle temperature, the first target tower kettle temperature is lower than the second target tower kettle temperature, and the operation state comprises a concentration state, a liquid collecting state and a collecting state.
2. The method for controlling the rectifying tower according to claim 1, wherein the controlling the operation state of the rectifying tower according to the current tower still liquid level, the current tower still temperature and preset target rectifying tower information comprises:
if the current tower kettle liquid level is less than the first target tower kettle liquid level, controlling the rectifying tower to be in the liquid collecting state;
if the current tower kettle liquid level is larger than the first target tower kettle liquid level, controlling the rectifying tower to be in the concentration state;
and if the current tower kettle liquid level is equal to the first target tower kettle liquid level and the current tower kettle temperature is equal to the second target tower kettle temperature, controlling the rectifying tower to be in the extraction state.
3. The method of claim 2, wherein controlling the rectifier to the liquid scraped state if the current tank level is less than the first target tank level comprises:
if the current tower kettle liquid level is smaller than the first target tower kettle liquid level, acquiring a first current steam pressure of the rectifying tower, a preset first steam pressure threshold value and a first current valve opening of a steam regulating valve;
and controlling a first target steam pressure of the rectifying tower and a first target valve opening of the steam regulating valve according to the current tower kettle temperature, the second target tower kettle temperature, the first current steam pressure, the first steam pressure threshold value and the first current valve opening until the current tower kettle liquid level is equal to the first target tower kettle liquid level.
4. The rectifying tower control method according to claim 3, wherein the controlling a first target steam pressure of the rectifying tower and a first target valve opening of the steam adjusting valve according to the current tower still temperature, the second target tower still temperature, the first current steam pressure, the first steam pressure threshold value, and the first current valve opening comprises:
calculating the first target steam pressure according to the first steam pressure threshold value and the difference value between the current tower kettle temperature and the second target tower kettle temperature;
and calculating the first target valve opening according to the first current valve opening and the difference value between the first target steam pressure and the first current steam pressure.
5. The method of claim 2, wherein the controlling the rectifying tower to the condensed state if the current tower bottom liquid level is greater than the first target tower bottom liquid level comprises:
if the current tower kettle liquid level is larger than the first target tower kettle liquid level, acquiring a second current steam pressure of the rectifying tower, a preset second steam pressure threshold value and a second current valve opening degree of a steam regulating valve;
and controlling a second target steam pressure of the rectifying tower and a second target valve opening of the steam regulating valve according to the current tower liquid level, the first target tower kettle liquid level, the second current steam pressure, the second steam pressure threshold value and the second current valve opening until the current tower kettle temperature is equal to the first target tower kettle temperature.
6. The rectifying tower control method according to claim 5, wherein the controlling a second target steam pressure of the rectifying tower and a second target valve opening of the steam adjusting valve according to the current tower liquid level, the first target tower still liquid level, the second current steam pressure, the second steam pressure threshold, and the second current valve opening comprises:
calculating the second target steam pressure according to the second steam pressure threshold value and the difference value between the current tower kettle liquid level and the first target tower kettle liquid level;
and calculating the second target valve opening according to the second current valve opening and the difference value between the second target steam pressure and the second current steam pressure.
7. The method of claim 2, wherein the controlling the distillation column to the draw state if the current column bottoms liquid level is equal to the first target column bottoms liquid level and the current column bottoms temperature is equal to the second target column bottoms temperature comprises:
and if the current tower kettle temperature is equal to the first target tower kettle liquid level and the current tower kettle temperature is equal to the second target tower kettle temperature, stopping controlling the steam pressure and the steam regulating valve of the rectifying tower, and opening the extraction valve and timing.
8. The rectification column control method according to claim 7, wherein the target rectification column information further includes a second target column bottom liquid level, the second target column bottom liquid level is less than the first target column bottom liquid level, the stopping of the control of the steam regulating valve and the steam pressure of the rectification column, the opening of the draw valve and the timing are performed, and thereafter further comprising:
and if the current tower kettle liquid level is less than the second target tower kettle liquid level or the timing reaches a preset time threshold, closing the extraction valve, and controlling the rectifying tower to be in the liquid collecting state or the concentrating state.
9. A storage medium storing computer instructions for performing all the steps of the rectifying tower control method according to any one of claims 1 to 8 when the computer instructions are executed by a computer.
10. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the rectifier control method of any of claims 1-8.
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